Radiator.



F. H. STOLP.

RADIATOR.

APPLICATION IILBD JULY 15, 1909.

1,048,107. Patented Dec.24,1912.

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ROME-TURNEY. A IATOR -01 NEWYOBIQQ: a

To all whom it may concern:

Be it known that I,-'FRANK H. STOLP, a citizen of the United States,residing at Rome, Oneida county, State 9f New York, have inventedcertainnew and useful Improvements in Radiators, the following being afull, clear, and exact disclosure of' the one form of my invention whichI at present deem preferable.

For a detailed description of the present form of my invention,reference may be had to the following specification and to the ac-'given capacity, particularly the transverse dimensions in the directionof air flow, and I therefore employ extremely thin material, say aboutseven one-thousandths of an inch in thickness, comparable to paper, andprovide a construction which, with such thin metal will still be strongand rugged. I

employ but a single row of water tubes and the parallel radiatingsurfaces are not more than one-eighth of an inch apart. By these means Iam enabled to reduce by one-half the transverse thickness of a radiatorhaving a given capacity, the standard trans-:

verse thickness of my radiator being but one and one-half inches.

'Referring to the drawings, A is a strip of very thin metal, preferablycopper, which is folded .or crimped' at exact inter-' vals, the crimpsbeing about one-eighth of:

an inch or less in height and each being split and'expanded atiitscenter into a tube B of a double arch form," as appears in Fig. l.-Previous to-crimping, the edges of the strip A are folded over as shownat a to form a bead and the bead is then folded into the crimps. tubegives strength, and the tube" is also protected on each slde by theunsplit portions 6, b of the crimp, while the bead gives strength andstiffness to the exposed, edges of the strip and when folded into thecrimp gives strength and stiffness to its exposed RADIATOR.

I r "Specification of Letters Patent.

The 'arch' form of the COMPANY, or norm,- vnw YORK, A conroaarrc'n i"Application filed July 15, 1909. SeriaI'No. 507,671,.

end. These features are of importance in connection with the thinmaterial. The upper edge of the tube on each side is curved upward, asshown at c in Fig. 5, and slightly dished, see (Z, Fig. 3.

A series of strips A, eachof the desired PatentedDecjg1912.

length of the radiator, are laid one upon another as shown in. Figs. 2,3 and 5, the

tubes B ofone strip registering with those of the next and the upwardlycurved and dished extremity of 'one tube entering a slight distance intothe larger base opening of the one adjacent to it in the next strip.This produces a continuous duct from top to bottom of the pile ofstrips, while between the ducts soformed extend the thin strips aboutone-tenth of an inch apart serving'as radiating surfaces exposed to theair which passes through from front to back of the radiator. Thisradiating surface in the aggregate is greatly increased by themultipliclty of thin strips containable in a given space. stead of theinterior of the strips and the strips themselves are in unbrokenmetallic connection with the tubular portionv so that the heat of thewater in the tubes is readily conducted to and throughout the strips. Myradiator is therefore of the same temperature front and back, the airbeing free to flow through without becoming over- The heat is also onthe surface in-- heated in its passage but capable of abstractofthe-radiating surfaces.

To seal the tubes against leakage, I dip one sideof an assemblage ofstrips in-a bath of solder and the thickness is so small that the solderwill be drawn by capillary attraction up into all of-the crevices.between succeeding tubes and effectively seal them. I prefer, however,to add'as a precaution an interior lining C. This is made of similarthin material folded over as shown in Fig. 4 to form an archedtubefitting easily into the sectional duct formedby' the tubesB. The liningCis 'in'sertedfafter the strips have been inserted and before-thesoldering above referred to" and without having its overlapping edgespreviously soldered; JBy.

thismeans the linings can enter; without "ob struction; moreover,being'of such thin material they can be thrust into the ducts in thepreviously assembled pile. of plates as distinguished from first settingup the lining tubes and forcing the strips down oventhem ing the heatuniformly from the entire area After the linings are in place, thesoldering operation will follow which will simultaneously seal theoverlapping edges of the lining tubes, seal together the tubes B, B andsecure the tubes B, B to the lining.

A radiator constructed as above described presents a neat a pearance,the edges of the strips being stiflfiand straight and uniformly spaced;while it is also strong and rugged in spite of the paper-like thinnessof the material employed in its construction and the water ducts areprotected against the leak-producing effect of external blows. It willalso be manifest that the thin'material would not permit of the tubularsections being struck up from the strip itself without the fold or crimpto furnish the necessary material for the tubes.

The oblong form of the ducts, with their longer dimension lying acrossthe strips or plates, but of less length than the width of i the stripsor plates, aifords a free space for the circulation of air through theradiator from front to back. I also prefer that the strips shall besuperposed in a horizontal series, so that their integral tubularextensions will be alined to form fluid ducts.

lar extensions, said extensions being joined to form a single row offluid ducts of less .width than the strips.

3. A radiator formed of a series of superposed strips of sheet metal.folded transversely at intervals and said folds being,

punched to form integral tubular extensions of oblong cross section,said extensions being joined to, form fluid ducts.

at. A radiator comprising a series of superposed spaced apart sheetmetal strips, said strips being provided at intervals with transversecrimped portions extending the full width of the respective strips, saidcrimped portions being shaped to provide tubes, said strips beingconnected by i said tubular portions.

, 5. A radiator comprising a series of super posed s ac'ed apart sheetmetal strips, said strips eing provided at intervals with of the strips.

7. A radiator comprising a series of superposed but separated stripsconnected at in- ,tervals by integral oblong tubes extending across thestrips a distance less than the width of the strips and havingreinforcing extensions reaching to the edges of the strips.

8. A radiator formed of a series of superposed strips of sheet metalfolded transversely, said folds being shaped to provide integral tubularextensions, and lining tubes within said extensions.

9. A radiator comprising a series of superposed spaced apart sheet metalstrips, said strips being provided at intervals with crimped portions,said crimped portions being shaped to provide'tubes, said strips beingconnected by said tubes, and lining tubes within said tubes. A

10. A radiator comprising a series of superposed spaced apart sheetmetal strips,

said strips being provided at intervals with transverse crimped portionsextending the full width of the respective strips, and said crimpedportions being shaped to provide tubes, said strips being connected bysaid tubes, and lining tubes within said tubes.

11. A radiator strip of sheet metal having tubular. projections formedthereon at intervals by punched and expanded folds or crimps in themetal of the strip.

12. A radiator strip formed of sheet metal plate having a folded orcrimped portion,

the fold being slit and expanded to form a tubular projection.

' 13. A radiator strip of thin metal having beaded edges and a tubularsection formed by a slitted fold or crimp including the beaded edge.

In witness whereof I have hereunto set my hand before two subscribingwitnesses,-

Witnesses:

L. N. FLAGK, C. H. SIMON.

